CMS 16GB (1X16GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad X250 - C57 at Amazon.com
Amazon.com: Lenovo ThinkPad X250 12.5in Laptop, Core i5-5300U 2.3GHz, 8GB Ram, 120GB SSD, Windows 10 Pro 64bit (Renewed)
Amazon.com: Lenovo ThinkPad X250 12.5 Inch Business Laptop, Intel Core I5-5300U up to 2.9GHz, 16G DDR3L, 512G SSD, WiFi, VGA, Mini DP, USB 3.0, Win 10 64 Bit Multi-Language Support English/French/Spanish(Renewed)
Lenovo Thinkpad X250 12.5" Ultrabook Business Laptop Computer, Intel Dual-Core i5-5300U Up to 2.9GHz, 8GB RAM, 256GB SSD, WiFi, Bluetooth, USB 3.0, Windows 10 Professional (Reused) - Walmart.com